package com.qf.mapper;

import org.apache.ibatis.annotations.Update;

/**
 * @author YDW
 * projectName:project2202_4
 * time:2022/6/19 15:15
 * description:
 */
public interface UserMapper {

    @Update(" update user set money=money-100 where id =1 ")
    void update();
}
